EncFS is an encrypted pass-through filesystem
which runs in userspace on Linux (using the FUSE
kernel module). Similar in design to CFS and other
pass-through filesystems, all data is encrypted
and stored in the underlying filesystem. Unlike
loopback filesystems, there is no predetermined or
pre-allocated filesystem size.

ccgfs is a transport-agnostic network filesystem using FUSE. Transport is arranged by helper programs, such as SSH. The PUSH transport mode acts like a "reverse" NFS and makes it possible to export a filesystem from a firewalled host without defeating the security model.

dumbofs allows you to view databases and tables from a PostgreSQL server as regular directories and files. It also allows the creation of special "search folders" which contain database records matching certain given criteria.

DemuxFS is a filesystem which demultiplexes MPEG-2 transport streams, exposing tables and their members as directories and files. It includes support for the DSM-CC protocols and provides access to audio, video, and caption streams through FIFOs.

The hgsftp module is an extension for the Mercurial DVCS which allows it to access repositories through SFTP. To accomplish this, it uses the FUSE/SSHFS filesystem to mount the repository during actions which require remote access.

FSter is a virtual filesystem implementation based on FUSE and exploiting Tracker's indexer to allow access to files according to the metadata with which they’re associated. Its behavior is highly customizable with XML configuration to describe in detail the desired hierarchy of files.